Improvement in lath-machines



PATEN'IVED FEB 281871 A THE ECKERT LITHOGRIIPHING CO" WASHINGTON. D C

I fla a .mzmewl {1 WIN a I I, JOHN GQKMAGKAY, of Ionia, inthe countybf 'Ionia, in the State of Michigan, have made certain Improvements in Machines for Sawing Lath and other I pieces of wood, of which the following is aspecifica' tion.1 y Theobject of the inventiou-is p g First, to prevent the isaw'yor'saws from becoming a. liea'tedin theoperation of F sawing lath or other small piecesfrorn boltsof wood; and ,SecondQto obtainafbetter means of bolts to the sawsithat cut thelath; and, y

1 It consists inithe application of means foripreventing the heating of the saws, and in the construction v of theguideor fence against which thebolt slides in Qitspassage tothe gang {of sawsto besawedinto lath :or other pieces, and alsoin the construction of the i Q pulley'for driving. the feed-rollers; flnthedrawingi Y, Figurel is asideview of the-machine;-

fFignre2 is'a top viewof the same v p, (Figure 3 is a sectionflof the gang of saws, the saw- Larbor, interposed :fibrousnou-conductiug substance, cylinder or reniovableslieeve,and,separatingwashers; an a, y Figure 4 is an end view of the' pivoted guide-way for feeding bolts of difierent width tothe saws, to be cutintolath i A is the frameth'at supports the machine; I

B is. the bed upon which the bolt from which the lath is to be sawed is laid and fed to the saws, and 1 uulay'bemade of metal,w0od,'or othersuitable material. -In this bed is a rectangular opening, G, the pur guiding the i posetof which will be hereafter described.

1 "O is the saw-shaft, working in properbearings on 9 frame A, with driving-pulley 0",? the gang of :saws b b b,lthe interposed fibrous non-conducting substance a, removable cylinder 1r, adjusting-washers c.a", collars ""on one end, and the friction-pul c. and "c", with nutc' ley cfand nutc atthe other end.

y l The. driving pnlle y 0 gives motion to the shaft 0 y and saws b b b, while the friction-pulley c is made to come incoutactwith and give motion to the drivingpulleys D D on shafts D D, which'have feed-rollers E E on their ends, and gear-wheels d l thereon geari ng intogear-wheels d" d; on shafts D" D",and thus jgivemotion tothe uppeufeed-rollers it "As the thicknessiof the bolt from which the laths aud fall. To admit otfisuohjchange in the width of the bolt, and'yet keep suificient liold upon the bolt to 1 feedit to the saws, a weighted bent lever, F, is employed, which is pivotedat f to a post, f, and at f to cross bar F,which ispiyoted to thelboxes through fLettersPatentNoi iiazetdaedreb ar 28,1871.

iMPRoVE Mi-I NTQIN LATHeMACHINEiSQ j are to be sawed niayvary, in orderto givelath of dif-- ferent widths, the upper feed-rollers are made to rise I The Schedule r eferredto inthese Letters Patentand. snaking part of the Ban 1e.

which the shafts D pass,.by whichan'angement, whe a thicker bolt is fed in between the two first feed-r0] ers, the upper roller will rise, carrying with it the er of the cross-bar F, and raise the weighted lever I and, as the bolt passes on to the saws, and the saw lath goes between the last pair of feed or deliver; rollers, the upper roller will also be raised and can with it. the journal-box and the otherendof the cros bar F, which will also raise the weighted lever F sti more, this connection being such that either one 1 both of the upper feed-rollers may rise or fall, as ci cumstances will dictate. The back ends of shafts D'f work in boxes that on oscillate-in their supports freely.

The Weight F" can be adjusted uponthe lever F, give more'or less pressure upon the feed-roller, as m: bedesired. I V i The. frictidn-pulleyc is made up of a number disks of the proper diameter cut from pasteboard, an

when enough ofthese disks are prepared to make tl pulley of the proper length, they are glued togethe placed upon the saw-shaft G, and the nut c turm hard up against the disks, forcing themlinto close co tact, and, when the glue is hardened, the pulley turned off to the right size, and it is ready for wor which forms a cheaper, more durable, and truer-wen ing pulley than any other substance known to app. cant; and this construction of pulley can be sncees fully applied as a friction-pulley to larger mills f sawing lumber, for operating thecarriage, as it'w stand severe shocks and not be harmed or put out true.

In order to prevent the communication of heat the saws from the arbor or shaft O,a flanged cylindi a, of fibrous non-conducting substance is securely 2 tached to the shaft 0, and bearing against the coil 0, and, when so attached, is turned oif truly, so th the removable sleeve or cylinder a shall fit over a against the fibrous non-conducting substance (1, wh a Washer, 11/, that will just slide closely over the slee a, is forced against the substance at, then a saw,"b, next put on, followed by another washer, and so on 1 thegang of saws is complete, when a disk of the nc conducting substance is placed against the last saw and a collar, c., against; that,.and the nut 0" turn hard'up against the eollar,when the gauge. saw with the non-conducting substance interposed, is co plete and ready for service.

In the rectangular opening G in the bed B is plus an oscillating guide-way, H,having angular grom in'its upper surface, forming pointsl, 2, and 3. T1 guide-way is pivoted at its ends, at g, to the bed so as to freely oscillate or turn upen its pivots, a

p fast to the back side is a bent arnn it, that exter lesser over-balance, as desired. l

The object of this guide-way is,'ii' a bolt will make out two lath, point 1 becomes the guide or fence against which the bolt is placed to feed it to the saws; but, if t will make another lath, then. it is placed against oint 2, and against'whioh it is fed to the saws; or, if t will make more, it is placed against point 3, or igainst the fixed feneeor guide B. I

Any number of grooves and points may be used up ;0 the number of saws in the gang.

In running the bolt against any one of these points, 501' 3, the side of the grooved guide-way next the ittendant is forced down, so that point 1 will be on a b13116 with the top of the bed B, and so on; and, if he bolt is large enough to be guided against-the fixed ence B, then the point 3 will be on a line with the op of the bed, and, as soon as the bolt has passed ofi of the grooved guide-way, the weight h on arm 71 will bring the guide-way back to its horizontal positioul Having thus described my invention, v

What I claim, and desire to secure by Leters Pat- Witnesses: JOHN C. MAOKAY.

N EwTos CRAWFORD, CHARLES OHINN. 

